CN103097688B - For vent systems and the method for selective catalytic reduction - Google Patents
For vent systems and the method for selective catalytic reduction Download PDFInfo
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- CN103097688B CN103097688B CN201180041820.XA CN201180041820A CN103097688B CN 103097688 B CN103097688 B CN 103097688B CN 201180041820 A CN201180041820 A CN 201180041820A CN 103097688 B CN103097688 B CN 103097688B
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- Prior art keywords
- pressure turbocharger
- high pressure
- vent systems
- exhaust
- turbo machine
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- 238000010531 catalytic reduction reaction Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000003197 catalytic effect Effects 0.000 claims abstract description 47
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 22
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 11
- 239000002360 explosive Substances 0.000 claims abstract description 9
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 27
- 239000007789 gas Substances 0.000 description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 12
- 239000004202 carbamide Substances 0.000 description 12
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/007—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in parallel, e.g. at least one pump supplying alternatively
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel
- F01N13/017—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel the purifying devices are arranged in a single housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/004—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust drives arranged in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/013—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses
- F01N2340/06—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses characterised by the arrangement of the exhaust apparatus relative to the turbine of a turbocharger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/30—Removable or rechangeable blocks or cartridges, e.g. for filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
- F02B29/0412—Multiple heat exchangers arranged in parallel or in series
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
A kind of vent systems being used for explosive motor (1), comprising: high pressure turbocharger (2); Low pressure turbocharger (3), it comprises the turbo machine (3b) in turbo machine (2b) downstream being arranged on high pressure turbocharger (2); For the turbine inlet (2c) of high pressure turbocharger (2) being connected to the device (7a, 7b) of one group of cylinder (15) of motor (1); Catalytic converter (4); And for reducing agent being incorporated into the device (5) in vent systems.Vent systems also comprises the device (7c) of the entrance (4b) for the turbine outlet (2c) of high pressure turbocharger (2) being connected to catalytic converter (4), and for the device (7d) of the turbine inlet (3c) that the outlet (4c) of catalytic converter (4) is connected to low pressure turbocharger (3).Described turbo machine (2b) upstream being arranged on high pressure turbocharger (2) for the device (5) be incorporated into by reducing agent in vent systems.The invention still further relates to the method for selective catalytic reduction.
Description
Technical field
The present invention relates to the vent systems for explosive motor, the invention still further relates to the selective catalytic reduction method in the vent systems of explosive motor.
Background technique
Nitrogen oxide (NOx) discharge of the explosive motor in boats and ships and power station causes the anxiety increasingly increased, and is subject to the restriction of the rule of the continuous reinforcement that International Maritime Organization (IMO) and other legislative bodies formulate.To a certain extent, can by be directly involved in means that motor runs (such as exhaust gas recirculatioon, diesel engine high-pressure fuel-injection pressure, water spray in admission line, etc.) meet the requirement that Different Rule formulates.But, for the many motor related measures reducing NOx emission, fuel efficiency is had a negative impact, and they are not enough to meet the strictest emission limit set.In order to fundamentally reduce NOx, need selective catalytic reduction (SCR).Adopt SCR, NOx can be realized and be reduced to 90% or even more.
In SCR system, catalyst material and reducing agent are used to the NOx formed between main combustion period to resolve into basic element.Catalyzer is arranged on the surface of support stupalith, and this support stupalith forms cellular structure at inside reactor.On the surface of the catalyst, NOx reacts with the ammonia being used as reducing agent and generates nitrogen and water.In practice, for reasons of safety, urea often replaces ammonia and uses.This is especially applied to offshore applications, because spillage over water ammonia is a kind of harm seriously.Urea is injected in exhaust stream as an aqueous solution.Due to the high temperature of exhaust, moisture evaporates and urea molecule is decomposed into ammonia and carbon dioxide.
In order to effectively reduce NOx and make the use of urea minimize, and in order to minimize the ammonia of escaping from SCR system, it is required for urea and exhaust stream effectively being mixed.In prior art solutions, typically via arranging fully long exhaust pipeline section to guarantee sufficient mixing between urea injection point and catalytic converter.If the distance long enough between spray site and catalytic converter, then can realize good mixed effect.But, this restriction to the vibrational power flow of vent systems.In addition, if catalytic converter is placed away from motor, then the low temperature be vented can have a negative impact to the function of catalytic converter.
Summary of the invention
The object of the present invention is to provide the vent systems of the improvement of the good mixing being conducive to reducing agent and exhaust.Another object of the present invention is to the selective catalytic reduction method that improvement is provided.
According to the present invention, the vent systems for explosive motor comprises: high pressure turbocharger, and it comprises turbo machine; Low pressure turbocharger, it comprises the turbo machine in the turbo machine downstream being arranged on high pressure turbocharger relative to exhaust stream direction; For the turbine inlet of high pressure turbocharger being connected to the device of one group of cylinder of motor; For the catalytic converter of selective catalytic reduction; And for reducing agent being incorporated into the device in vent systems.Vent systems also comprises the device of the entrance for the turbine outlet of high pressure turbocharger being connected to catalytic converter, and for the device of the turbine inlet that the outlet of catalytic converter is connected to low pressure turbocharger.Described for by reducing agent, the device be incorporated in vent systems is arranged on the turbine upstream of high pressure turbocharger.
According to the present invention, in the method for the selective catalytic reduction in the vent systems of explosive motor, described vent systems comprises: high pressure turbocharger, and it comprises turbo machine; And low pressure turbocharger, it comprises the turbo machine in the turbo machine downstream being arranged on high pressure turbocharger relative to exhaust stream direction, reducing agent is incorporated into described system from the turbine upstream of high pressure turbocharger, and described selective catalytic reduction occurs in the upstream of the downstream of the turbo machine of high pressure turbocharger and the turbo machine of low pressure turbocharger.
Due to for by reducing agent, the device be incorporated in vent systems is arranged on the upstream of high pressure turbocharger, and catalytic converter is arranged on the downstream of high pressure turbocharger, therefore reducing agent flow through the turbo machine of high pressure turbocharger before entering catalytic converter.Thus, reducing agent effectively mixes with exhaust, and before catalytic converter, do not need long exhaust pipeline section.This vent systems allowing structure compact.Catalytic converter is arranged between turbosupercharger guarantees that delivery temperature high must being enough to carries out selective catalytic reduction.
According to the embodiment of the present invention, vent systems comprises: the second high pressure turbocharger, and it comprises turbo machine; Second low pressure turbocharger, it comprises the turbo machine in the turbo machine downstream being arranged on the second high pressure turbocharger relative to exhaust stream direction; For the turbine inlet of the second high pressure turbocharger being connected to the device of second group of cylinder of motor; For the turbine outlet of the second high pressure turbocharger being connected to the device of the entrance of catalytic converter; For the outlet of catalytic converter being connected to the device of the turbine inlet of the second low pressure turbocharger; And for reducing agent to be incorporated into the second device vent systems from the turbine upstream of the second high pressure turbocharger.This mode of execution of the present invention is applicable to V-type engine, and wherein, two exhaust casings of described motor are all provided with respective gas exhaust manifold and turbosupercharger.
According to another embodiment of the present invention, described system comprises exhaust module, and this exhaust module comprises: high-pressure exhaust pipe, and it is for being connected to the turbine inlet of high pressure turbocharger by the gas exhaust manifold of motor; Mixing tube, it is for being connected to the entrance of catalytic converter by the turbine outlet of high pressure turbocharger; And low pressure exhaust pipe, it is for being connected to the turbine inlet of low pressure turbocharger by the outlet of catalytic converter, the pipeline of described exhaust module is integral with one another.Described exhaust module is because make vent systems compact dimensions and decrease installation time and have advantage.Adopt exhaust module, the heat-transfer character of vent systems also can be optimized.
According to another implementation of the invention, exhaust module comprises: the second high-pressure exhaust pipe, and it is for being connected to the turbine inlet of the second high pressure turbocharger by the second gas exhaust manifold of motor; Second mixing duct, it is for being connected to the entrance of catalytic converter by the turbine outlet of the second high pressure turbocharger; And the second low pressure exhaust pipe, it is for being connected to the turbine inlet of the second low pressure turbocharger by the outlet of catalytic converter.This kind of exhaust module is applicable to V-type engine.
According to another implementation of the invention, exhaust module is single foundry goods.
According to the embodiment of the present invention, for by reducing agent, the device be incorporated in described vent systems is arranged in exhaust module.
Accompanying drawing explanation
Fig. 1 schematically shows the mode of execution according to vent systems of the present invention.
Fig. 2 schematically illustrates another mode of execution of vent systems.
Fig. 3 illustrates exhaust module according to the embodiment of the present invention.
Fig. 4 illustrates the exhaust module of Fig. 3 from another angle.
Embodiment
Description describes the present invention in more detail.Figure 1 illustrates the explosive motor 1 with two turbocharging.High pressure turbocharger 2 and low pressure turbocharger 3 are connected in series.Two turbosupercharger 2,3 comprise compressor 2a, 3a and turbo machine 2b, 3b.
The cylinder 15 of motor 1 is connected to high-pressure exhaust pipe 7b by gas exhaust manifold 7a, and high-pressure exhaust pipe 7b is connected to the turbine inlet 2c of high pressure turbocharger 2.Exhaust from motor 1 flows into gas exhaust manifold 7a and high-pressure exhaust pipe 7b from motor 1, flows to the turbo machine 2b of high pressure turbocharger 2.For the catalytic converter 4 of selective catalytic reduction between the turbo machine 2b and the turbo machine 3b of low pressure turbocharger 3 of high pressure turbocharger 2.Catalytic converter 4 comprises one or more SCR element.SCR element is the ceramic honeycomb being coated with catalyst material.On the surface of SCR element, reducing agent and NOx react and form nitrogen and water.Catalytic converter 4 can also comprise the oxidation catalyst for oxidizing carbon monoxide and unburned hydrocarbon.When the escaping of ammonia, the also oxidized catalyst oxidation at least partially of excess ammonia.
The turbine outlet 2d of high pressure turbocharger 2 is connected to the entrance 4b of catalytic converter 4 by mixing tube 7c.The outlet 4c of catalytic converter 4 is connected to the turbine inlet 3c of low pressure turbocharger 3 by low pressure exhaust pipe 7d.
Suction tude 6 is set to inlet guide in the cylinder 15 of motor 1.Figure 1 illustrates four cylinders 15, but motor 1 can comprise the cylinder 15 of any amount.Air inlet, first by the compressor 3a of low pressure turbocharger 3, then passes through the compressor 2a of high pressure turbocharger 2.Low-pressure charging air-cooler 8 is arranged between the compressor 3a of the low pressure turbocharger 3 and compressor 2a of high pressure turbocharger 2.High pressure charger-air cooler 9 is arranged between the compressor 2a of high pressure turbocharger 2 and motor 1.Between suction tude 6 and high-pressure exhaust pipe 7b, there is bypass tube 16, bypass tube 16 is provided with the bypass valve 17 for regulating by the inlet stream of bypass tube 16.
Vent systems also comprises exhaust steam passage 10, and high-pressure exhaust pipe 7b is connected to mixing tube 7c by it.Exhaust steam passage 10 is provided with the exhaust steam passage valve 11 for regulating the exhaust stream in exhaust steam passage 10.
Urea liquid is stored in case 12, by pumping unit 13 from case 12 transport urea solution.Dosing units 14 is for providing correct urea liquid flow velocity for spraying.Sparger 5 is for being incorporated into vent systems by urea liquid.Sparger 5 can be the injector type of arbitrary routine.The typical sprayer unit being suitable for this object comprises two coaxial conduits, and wherein inner conduit is used for urea liquid, and outer conduit is used for pressurized air, and this pressurized air and urea liquid mix to form the fine spray mixed with exhaust stream in nozzle.
Because reducing agent is injected into the high-pressure exhaust pipe 7b of high pressure turbocharger 2 upstream, so mixing tube 7c can be very short.Reducing agent and exhaust mix by the turbo machine of high pressure turbocharger 2 effectively, do not need long outlet pipe thus before catalytic converter 4.
The difference of the mode of execution of Fig. 2 and the mode of execution of Fig. 1 is, motor 1 is V-type engine.Another exhaust casing of motor 1 is provided with the second gas exhaust manifold 7a ', and cylinder 15 ' is connected to the second high-pressure exhaust pipe 7b ' by the second gas exhaust manifold 7a '.Vent systems comprises second high pressure turbocharger 2 ' with compressor 2a ' and turbo machine 2b '.Second gas exhaust manifold 7a ' is connected to the turbine inlet 2c ' of the second high pressure turbocharger 2 ' by the second high-pressure exhaust pipe 7b '.In the mode of execution of Fig. 2, catalytic converter 4 is divided into the first compartment 4a and the second compartment 4a '.Two compartments 4a, 4a ' be all provided with entrance 4b, 4b ' and outlet 4c, 4c '.The turbine outlet 2c of the first high pressure turbocharger 2 is connected to the entrance 4b of the first compartment 4a of catalytic converter 4 by the first mixing tube 7c.The turbine outlet 2c ' of the second high pressure turbocharger 2 ' is connected to the entrance 4b ' of the second compartment 4a ' of catalytic converter 4 by the second mixing tube 7c '.The outlet 4b of the first compartment 4a of catalytic converter 4 is connected to the turbine inlet 3c of the first low pressure turbocharger 3 by the first low pressure exhaust pipe 7d.The outlet 4c ' of the second compartment 4a ' of catalytic converter 4 is connected to the turbine inlet 3c ' of the second low pressure turbocharger 3 ' by the second low pressure exhaust pipe 7d '.
Motor 1 in the mode of execution of Fig. 2 is provided with the second low-pressure charging air-cooler 8 ' and the second high pressure charger-air cooler 9 ' equally.First gas exhaust manifold 7a and the second gas exhaust manifold 7a ' is connected to the first mixing duct 7c and the second mixing duct 7c ' by the exhaust steam passage 10 shared.Second gas exhaust manifold 7a ' is provided with the second sparger 5 ' for being incorporated into by reducing agent in vent systems.
According to the embodiment of the present invention, a part for vent systems can be arranged in exhaust module 18, as shown in Figure 3 and Figure 4.Exhaust module 18 comprises the first high-pressure exhaust pipe 7b, the second high-pressure exhaust pipe 7b ', the first mixing tube 7c, the second mixing tube 7c ', the first low pressure exhaust pipe 7d and the second low pressure exhaust pipe 7d '.All pipeline 7b, 7b ', 7c, 7c ', 7d, 7d ' be merged in individual module.Exhaust module is also provided with the pedestal 19 of catalytic converter 4.Exhaust module 18 can manufacture as single foundry goods, or it can be made up of the several parts such as welding together.
Flange 21,21 ' is arranged on high-pressure exhaust pipe 7b, the first end of 7b ', for by high-pressure exhaust pipe 7b, 7b ' be connected to motor 1 gas exhaust manifold 7a, 7a '.The flange 22,22 ' at the second end place of turbine inlet 2c, 2c of high pressure turbocharger 2,2 ' ' be connected to high-pressure exhaust pipe 7b, 7b '.The flange 23,23 ' at the first end place of turbine outlet 2d, 2d of high pressure turbocharger 2,2 ' ' be connected to mixing tube 7c, 7c '.The flange 24,24 ' at the second end place of entrance 4b, 4b of catalytic converter 4 ' be connected to mixing tube 7c, 7c '.The flange 24,24 ' at the first end place of outlet 4c, 4c of catalytic converter 4 ' be connected to low pressure exhaust pipe 7d, 7d '.The flange 26,26 ' at the second end place of turbine inlet 3c, 3c of low pressure turbocharger 3,3 ' ' be connected to low pressure exhaust pipe 7d, 7d '.
Exhaust module 18 also comprises from high-pressure exhaust pipe 7b, 7b ' exhaust steam passage outlet 10a.Also be provided with and enter into low pressure exhaust pipe 7d, 7d ' exhaust steam passage entrance 10b.Exhaust steam passage 10 can be arranged between exhaust steam passage outlet 10a and exhaust steam passage entrance 10b, for guide portion exhaust by high pressure turbocharger 2,2 '.Second exhaust steam passage outlet 20 is arranged on the upper surface of exhaust module 18.Second exhaust steam passage can be connected to the second exhaust steam passage outlet 20, makes it possible to directing exhaust gas by low pressure turbocharger 3,3 '.
Many modification of the present invention are all feasible in the scope of appending claims.Such as, the catalytic converter of single compartment also can be used to V-type engine.The catalytic converter of separation also can be set double bank engine.
Claims (6)
1., for a vent systems for explosive motor (1), this vent systems comprises:
High pressure turbocharger (2), it comprises turbo machine (2b);
Low pressure turbocharger (3), it comprises the turbo machine (3b) in turbo machine (2b) downstream being arranged on described high pressure turbocharger (2) relative to exhaust stream direction;
For the turbine inlet (2c) of described high pressure turbocharger (2) being connected to the device (7a, 7b) of one group of cylinder (15) of motor (1);
For the catalytic converter (4) of selective catalytic reduction; And
For reducing agent being incorporated into the device (5) in described vent systems,
It is characterized in that,
Described vent systems also comprises:
For the turbine outlet (2d) of described high pressure turbocharger (2) being connected to the device (7c) of the entrance (4b) of described catalytic converter (4); With
For the outlet (4c) of described catalytic converter (4) being connected to the device (7d) of the turbine inlet (3c) of described low pressure turbocharger (3),
Further, the described upstream being arranged on the turbo machine (2b) of described high pressure turbocharger (2) for the device (5) be incorporated into by reducing agent in described vent systems;
Wherein, described system comprises exhaust module (18), and this exhaust module (18) comprising:
High-pressure exhaust pipe (7b), it is for being connected to the turbine inlet (2c) of described high pressure turbocharger (2) by the gas exhaust manifold (7a) of described motor (1);
Mixing tube (7c), it is for being connected to the entrance (4b) of described catalytic converter (4) by the turbine outlet (2d) of described high pressure turbocharger (2); And
Low pressure exhaust pipe (7d), it is for being connected to the turbine inlet (3c) of described low pressure turbocharger (3) by the outlet (4c) of described catalytic converter (4),
The pipeline (7b, 7c, 7d) of described exhaust module (18) is for integral with one another.
2. vent systems according to claim 1, is characterized in that, described system comprises:
Second high pressure turbocharger (2 '), it comprises turbo machine (2b ');
Second low pressure turbocharger (3 '), it comprises the turbo machine (3b ') being arranged on turbo machine (the 2b ') downstream of described second high pressure turbocharger (2 ') relative to described exhaust stream direction;
For the turbine inlet of described second high pressure turbocharger (2 ') (2c ') being connected to the device (7a ', 7b ') of second group of cylinder (15 ') of described motor (1);
For the turbine outlet of described second high pressure turbocharger (2 ') (2d ') being connected to the device (7c ') of the entrance (4b ') of described catalytic converter (4);
For the outlet of described catalytic converter (4) (4c ') being connected to the device (7d ') of the turbine inlet (3c ') of described second low pressure turbocharger (3 '); And
For reducing agent being incorporated into from the turbo machine of described second high pressure turbocharger (2 ') (2b ') upstream the second device (5 ') in described vent systems.
3. vent systems according to claim 1, is characterized in that, described exhaust module (18) comprising:
Second high-pressure exhaust pipe (7b '), it is for being connected to the turbine inlet (2c ') of the second high pressure turbocharger (2 ') by the second gas exhaust manifold of described motor (1) (7a ');
Second mixing tube (7c '), it is for being connected to the entrance (4b ') of catalytic converter (4) by the turbine outlet of the second high pressure turbocharger (2 ') (2d '); And
Second low pressure exhaust pipe (7d '), it is for being connected to the turbine inlet (3c ') of the second low pressure turbocharger (3 ') by the outlet of described catalytic converter (4) (4c ').
4. vent systems according to claim 1, is characterized in that, described exhaust module (18) is single foundry goods.
5. vent systems according to claim 1, is characterized in that, is describedly arranged in described exhaust module (18) for the device (5,5 ') be incorporated into by reducing agent in described vent systems.
6., for a method for the selective catalytic reduction in the vent systems of explosive motor (1), this vent systems comprises:
High pressure turbocharger (2), it comprises turbo machine (2b), and
Low pressure turbocharger (3), it comprises the turbo machine (3b) in turbo machine (2b) downstream being arranged on described high pressure turbocharger (2) relative to exhaust stream direction;
It is characterized in that,
Reducing agent is introduced in described system from turbo machine (2b) upstream of described high pressure turbocharger (2), and
Described selective catalytic reduction occurs in the upstream of the downstream of the turbo machine (2b) of described high pressure turbocharger (2) and the turbo machine (3b) of described low pressure turbocharger (3);
Wherein, described system comprises exhaust module (18), and this exhaust module (18) comprising:
High-pressure exhaust pipe (7b), it is for being connected to the turbine inlet (2c) of described high pressure turbocharger (2) by the gas exhaust manifold (7a) of described motor (1);
Mixing tube (7c), it is for being connected to the entrance (4b) of described catalytic converter (4) by the turbine outlet (2d) of described high pressure turbocharger (2); And
Low pressure exhaust pipe (7d), it is for being connected to the turbine inlet (3c) of described low pressure turbocharger (3) by the outlet (4c) of described catalytic converter (4),
The pipeline (7b, 7c, 7d) of described exhaust module (18) is for integral with one another.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20105895A FI20105895A (en) | 2010-08-30 | 2010-08-30 | Exhaust system and method for selective catalytic reduction |
| FI20105895 | 2010-08-30 | ||
| PCT/FI2011/050665 WO2012028768A1 (en) | 2010-08-30 | 2011-07-19 | Exhaust system and method for selective catalytic reduction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103097688A CN103097688A (en) | 2013-05-08 |
| CN103097688B true CN103097688B (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180041820.XA Active CN103097688B (en) | 2010-08-30 | 2011-07-19 | For vent systems and the method for selective catalytic reduction |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2612006B1 (en) |
| KR (1) | KR101787333B1 (en) |
| CN (1) | CN103097688B (en) |
| FI (1) | FI20105895A (en) |
| WO (1) | WO2012028768A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2415988A1 (en) * | 2010-08-06 | 2012-02-08 | Caterpillar Motoren GmbH & Co. KG | Two-stage turbocharged engine |
| FI124805B (en) * | 2012-04-27 | 2015-01-30 | Wärtsilä Finland Oy | COMBUSTION ENGINE AND A METHOD OF CONTROLLING ITS OPERATION |
| DE102012014144A1 (en) * | 2012-07-18 | 2014-01-23 | Man Diesel & Turbo Se | Abgasaufladungs- and exhaust aftertreatment module for an internal combustion engine and internal combustion engine |
| DE102012020828B4 (en) * | 2012-09-07 | 2019-01-03 | Technische Universität Dresden | Internal combustion engine with two-stage supercharging and an integrated oxidation catalytic converter |
| FI124642B (en) * | 2012-10-09 | 2014-11-14 | Wärtsilä Finland Oy | Piston engine catalytic converter unit and supercharged piston engine |
| DE102012020243B4 (en) * | 2012-10-12 | 2020-06-18 | Mtu Friedrichshafen Gmbh | Carrier housing for an exhaust gas turbocharger arrangement, exhaust gas turbocharger arrangement and internal combustion engine |
| US9181867B2 (en) | 2012-10-12 | 2015-11-10 | Mtu Friedrichshafen Gmbh | Carrier housing for a turbocharger arrangement |
| CN104533599B (en) * | 2014-12-29 | 2017-06-20 | 中国船舶重工集团公司第七一一研究所 | The two-stage adjustable pressurization system of internal combustion engine |
| US9903268B2 (en) * | 2015-04-02 | 2018-02-27 | Ford Global Technologies, Llc | Internal combustion engine with two-stage supercharging capability and with exhaust-gas aftertreatment arrangement, and method for operating an internal combustion engine |
| DK178780B1 (en) * | 2015-06-19 | 2017-01-23 | Man Diesel & Turbo Filial Af Man Diesel & Turbo Se Tyskland | Large two-stroke turbocharged compression ignited internal combustion engine with an exhaust gas purification system |
| CN105673159A (en) * | 2016-02-02 | 2016-06-15 | 潍柴动力股份有限公司 | Engine exhaust system and engine applying same |
| SE540234C2 (en) * | 2016-09-30 | 2018-05-08 | Scania Cv Ab | Multiple bank exhaust system for a turbocharged internal combustion engine comprising reductant supply system |
| US11512606B1 (en) | 2021-09-10 | 2022-11-29 | Hamilton Sundstrand Corporation | Micro-turbine generator multi-stage turbine with interstage catalytic converter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008017280A1 (en) * | 2008-04-04 | 2009-11-19 | Man Nutzfahrzeuge Aktiengesellschaft | Catalyzer's operating parameter changing arrangement for use in small-loaded vehicle, has catalyzer and/or particle filter and/or particle separator flow-technically attached between high and low pressure gas turbines |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07507122A (en) * | 1992-06-02 | 1995-08-03 | エムテーウー・モートレン−ウント・ツルビネン−ウニオン・フリードリッヒスハーフェン・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Support casing for exhaust gas turbocharger that can be attached to internal combustion engine |
| DE102004027593A1 (en) * | 2004-06-05 | 2005-12-29 | Man B & W Diesel Ag | Automotive diesel or petrol engine with exhaust system with selective catalytic reduction |
| SE529400C2 (en) * | 2005-12-13 | 2007-07-31 | Scania Cv Ab | Arrangement of an internal combustion engine |
| JP4811366B2 (en) * | 2007-07-20 | 2011-11-09 | トヨタ自動車株式会社 | Exhaust control device for internal combustion engine |
| JP2010084695A (en) * | 2008-10-01 | 2010-04-15 | Diesel United:Kk | Exhaust emission control device |
-
2010
- 2010-08-30 FI FI20105895A patent/FI20105895A/en not_active Application Discontinuation
-
2011
- 2011-07-19 EP EP11770830.5A patent/EP2612006B1/en active Active
- 2011-07-19 WO PCT/FI2011/050665 patent/WO2012028768A1/en active Application Filing
- 2011-07-19 KR KR1020137007445A patent/KR101787333B1/en active IP Right Grant
- 2011-07-19 CN CN201180041820.XA patent/CN103097688B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008017280A1 (en) * | 2008-04-04 | 2009-11-19 | Man Nutzfahrzeuge Aktiengesellschaft | Catalyzer's operating parameter changing arrangement for use in small-loaded vehicle, has catalyzer and/or particle filter and/or particle separator flow-technically attached between high and low pressure gas turbines |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101787333B1 (en) | 2017-11-15 |
| WO2012028768A1 (en) | 2012-03-08 |
| CN103097688A (en) | 2013-05-08 |
| EP2612006B1 (en) | 2014-12-10 |
| EP2612006A1 (en) | 2013-07-10 |
| KR20130138758A (en) | 2013-12-19 |
| FI20105895A0 (en) | 2010-08-30 |
| FI20105895A (en) | 2012-03-01 |
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